Imaging circuits and method
Abstract:
Imaging circuits and an imaging method are provided. One example of an imaging circuit includes a transimpedance amplifier circuit including an amplifier and a feedback capacitor coupled in a feedback path between an output of the amplifier and an inverting input of the amplifier, a correlated double sampling capacitor, a first switch selectively coupled between a first terminal of the correlated double sampling capacitor and the output of the amplifier along a first path, a second switch selectively coupled between a second terminal of the correlated double sampling capacitor and the output of the amplifier along a second path, the second switch positioned to couple the correlated double sampling capacitor into the feedback path in series with the feedback capacitor when activated, and a sample-hold capacitor coupled via a sample-hold switch to the output of the amplifier.
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